Description

5,5-Dimethyl-2-(2,4,6-Trimethylphenoxy)-1,3,2-Dioxaphosphorinane is a specialized organophosphorus compound with a cyclic phosphite structure. This chemical is valued as a high-performance intermediate and additive, particularly in polymer stabilization and synthesis. It is primarily needed by manufacturers in the polymer, specialty chemical, and advanced materials industries for applications requiring precise chemical modification and stabilization.

Application

• Primary use as a phosphite antioxidant and stabilizer in polymer formulations, including polyolefins and engineering plastics.
• Key intermediate in the synthesis of specialty organophosphorus compounds for agrochemicals and pharmaceuticals.
• Stabilizing agent in lubricants and hydraulic fluids to prevent oxidative degradation.
• Component in flame retardant synergist systems for various polymeric materials.
• Reagent for asymmetric synthesis and catalysis in fine chemical production.
• Additive in adhesive and coating formulations to enhance thermal and color stability.

Basic Information

Item	Details
Product Name	5,5-Dimethyl-2-(2,4,6-Trimethylphenoxy)-1,3,2-Dioxaphosphorinane
CAS No.	72018-04-3
Molecular Formula	C15H23O3P
Molecular Weight	282.31 g/mol
Synonyms	2-(2,4,6-Trimethylphenoxy)-5,5-dimethyl-1,3,2-dioxaphosphorinane; 5,5-Dimethyl-2-(mesityloxy)-1,3,2-dioxaphosphorinane; Cyclic Mesityl Phosphite; Dioxaphosphorinane, 5,5-dimethyl-2-(2,4,6-trimethylphenoxy)-; Phosphorous acid, cyclic 2,2-dimethyltrimethylene ester, 2-(2,4,6-trimethylphenyl) ester
EINECS	Contact for details

Quality Control

Our 5,5-Dimethyl-2-(2,4,6-Trimethylphenoxy)-1,3,2-Dioxaphosphorinane is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its sensitivity to oxidation, the container must be kept sealed after each use to minimize exposure to air.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.